Oil Pump - BMW N62B44 Manual

N N o o t t e e : : T T h h e e o o i i l l c c h h e e c c k k v v a a l l v v e e s s a a r r e e d d i i f f f f e e r r e e n n t t i i n n d d e e s s i i g g n n a a n n d d s s h h o o u u l l d d
n n o o t t b b e e m m i i x x e e d d u u p p o o n n i i n n s s t t a a l l l l a a t t i i o o n n . .
Oil Pressure Switch
The oil pressure switch is located on the side in the bank 1-4 cylinder head.

Oil Pump

The oil pump is mounted at an angle to the crankshaft bearing cap and is driven by the
crankshaft using a roller chain. The oil pump is a two-stage gear oil pump with two paral-
lel switched gear clusters.
1. Drive Shaft
2. Mounting Points
3. Oil Filter
4. Pressure Relief Valve (over 15 Bar)
5. Control Valve (Pump Stage/Pressure Control)
6. Oil supply from the oil pump to the engine
7. Oil pressure control tube from the engine to
the control valve.
The two pair of gear clusters are stacked one
behind the other and work in two stages.
Stage two (both pump supply circuits) is only
active in the lower engine speed range up to
approx. 2,000 rpm to provide sufficient oil pres-
sure for the VANOS at high oil temperatures.
Stage two is deactivated hydraulically at a pres-
sure of 2 bar.
42-02-73
42-02-75
Oil Pump
42-02-76
N62 Engine
49